SIGNING_KEY_MISSING
Signature Reserved code: not emitted by the current version
Meaning
This code is defined in the standard catalog; its detailed message will be specified when the related feature becomes available.
What to do
Check your signing key (validity, passwords, fingerprint) in the Signing area.
Keep the request_id field of the response: it lets support find the incident.
Example response
{
"code": "SIGNING_KEY_MISSING",
"message": "…",
"docs_url": "/errors/SIGNING_KEY_MISSING",
"request_id": "01a0d2…"
}